Lubricator.



L. A. & R. H. BlGGAR.

LUBRICATOR. APPLICATION FILED DECJZ, 1914.

1,173,921. Patented Feb. 29, 1916. I

5/2 By W EH ar LEROY A. BIGGAR AND RUTHERFORD H. BIGGAR, 0F ONEIDA, NEWYORK.

LUBRICATOR.

Patented Feb. 29, 1916. Application filed December 12, 1914. Serial No.876,899.

1 173 921. Specification of Letters Patent.

Referring more particularly to the drawing, 1 represents an ordinaryline or countershaft which has loosely mounted thereon the pulley 2.This pulley is provided with the usual hub 3 having a radial opening forthe reception of the cup nipple 4, which opening connects or providescommunication between the cup and the shaft and To all whom, it mayconcern Be it known that we, LEROY A. BIGGAR and RUTHERFORD H. BIGGAR,citizens of the United States, residing at Oneida, in the county ofMadison and State of New York, have invented new and useful Improvementsin Lubricators, of which the following is a specification. I

This invention relates to lubricating devices and more particularly tooil cups for loose pulleys.

- One of the principal objects of the invention is to provide acentrifugally controlled lubricating device which is actuated upon eachstarting of the loose pulley to feed a predetermined quantity oflubricant to the V pulley shaft. When feeding lubricant to pulleys ofthis type it is desirable that at each start of the pulley apredetermined quantity of lubricant be fed to the pulley shaft and thenthe flow of lubricant stopped so as to avoid waste, and in lubricatorsof this type it is also necessary that provision be made for filling thecup with the pulley in any position without having to move the pulley.

Another object of the invention is the pro vision of a cup of thischaracter having means for admitting a suflicient quantity of air to thecup which is accomplished by providing a valve for closing the outletport when the pulley is inactive. To this end it is the object of thisinvention to provide a device which upon starting of the pulley willfeed a predetermined quantity of oil to the shaft of the pulley and atthe same time open an air inlet so as to prevent a vacuum in the'cup,also to provide a device in whlch the air port is closed off immediatelyupon stopping of the pulley so as to prevent unnecessary escape of oilfrom the cup and to provide for a free circulation of air within thecup. t

Further objects of the invention will appear as the followingdescription is read in connection with the accompanying drawing, I whichforms a part of this application, and, in which Figure 1 is a sideelevation of a pulle showing the improved type of cup attache thereto.Fig. 2 is a detail vertical sectiona view taken through the cup andpulley hub Fig. 3 is a horizontal section taken on th line 3-3 of Fig.2.

be hereinafter described.

The cup, as shown, is constructed of upper and lower sections 5 and 6,the former of which is provided with a concentric external flangeinternally threaded to receive the externally threaded lower edge of theupper section. The section 5 is provided with the externally threadednipple 4 which is threaded into the hub 3, as before described, and theupper section 6 is provided with an extension forming a cylinder, thepurpose of which will be hereinafter described. The base of the cylinderis recessed, as shown at 8, to receive the upper terminal of the hollowshaft 9. This shaft is arranged centrally in the cup and has its lowerend seated in a channel 10 formed centrally in the nipple a andcommunicating with a feed nipple 11 which passes through the reservoir,indicated at 12, and has its terminal arranged adjacent the shaft 1. Theupper end of the shaft 9 is ported, as shown at 13, to permit the oil'in the cylinder 7 to pass into the hollow shaft 9.

The nipple 4 is alsoprovided with a channel 14 in which is located theseparated vent tubes-15 and 16, the former extending down into thereservoir 12 and terminating on a latter tube 16 is enlarged at itsupper end .and extends into the cup a short distance. Slidably mountedupon the shaft 9 is a plunger or piston 17 arranged to normally restupon the upper end of and close the tube 16. This action is broughtabout by a ilight spiral spring 18 which surrounds the ipiston orplunger 17 and has its inner end resting upon an annular flange 1.9andits pper end surrounding a depending annular ib 20 forming an inwardlyextending coninuation of the cylinder 7. a

Each section of the cup. is provided with pair of plug filling openings21 closed by the plugs 22 and, as will be seen, these openforms areservoir, the purpose of which will 7 line even with the end of thetube 1. The r ings are 7 arranged at quarter intervals around asubstantially globular cup so that irrespective of theposition of thepulley the; "cup may be filled.

In the operation or noticed that when the pulley is started that 'theplunger 01' pulley 15 moves outwardly over the shaft 9 and freely passesthrough the oil within the cup until it reaches the cylinder. The oilbeing forced into the cylinder by centrifugal action is acted upon bythe plunger and forced through the opening13 and through the shaft 9,channel 10 and tube 11 to the reservoir 12. As the oil in thisreservoiris. also admitted by centrifugal action it will remain against the endof the nipple at until the'pulleystops.

If the pulley stops with the cup upside down no oil reaches the shaftuntil the pulley is again started. The slowmovement in first startingpermits at least three-fourths of a revolution to be made ,beforegaining full speed and this three-fourths revolution is 'sufficient toenable av certain quantity of the oil in the reservoir 12'to reach theshafts It will be noticedthat in this operation the air channel has beenopened by the piston.

. receding from the end of the tube 16, thus admitting the desiredquantity of air to the cup to prevent a vacuum, and that immedlatelyupon the pulley stopping the plunger will, by the action of the spring18, be forced against the end of the tube 16,thus closing the same andpreventing unnecessary escape of oil. It will also be noticed that theplunger when fully extended by centrifugal action will close the port 18and thereby retain the oil in the shaft, also that upon receding thepiston opens the port thus allowing air to enter the cup through thischannel, thus eliminating a Vacuum in the cylinder. g V

''What is claimed is V 1. A lubricator for pulleys comprising a closedcup, and means operating within the cup and coacting therewith to.successively discharge a predetermined portion of oil from the cup ateach starting of the pulley and to. thereafter remain inactive duringthe cup through the communicating means to the pulley shaft, said meansremaining V ley, and means acting successively upon each s inactivethereafter. V

3. A lubricating device for loosepulleys comprising a closed cupattached to the pulstarting of the pulley to discharge a predeterminedportionof lubricant from thecup and thereafter remaininginactive duringthe revolution of. the pulley;

4. Alubricator for pulleys comprising a i closed vcup having alubricantoutlet and the device it will bean. air inlet, and centrifugallycontrolled means operating within the cup to alternately open the airinlet and discharge lubri-.

cant from the cup and close the air inlet;

5. A lubricating device forpulleys comprising a closed cup having alubricant outwithin the cupfor successively'opening the let and an airinlet, and means operating air inlet and discharging a predeterminedquantity of lubricant through the outlet;

6. A lubricating device for pulleys comprising a closed cup havingalubricant outlet, a cylinder having its full diameteropen to the cup,and a plunger freely operating in the cup and arranged to forcejo'ilfrom the cylinder to. the outlet by centrifugal action. v v 7, Alubricating device for pulleysrcom= prising a cup having alubricantoutlet and an air inlet, and means'automatically actuated uponthe startingv andstopping of the pulley for opening the air inletand'dis charging oil from the cup and for closing the air inlet. r is 8.A lubricating devicefor pulleys com prising a closed cup having'alubricantout let and a plunger cylinder, a reciprocally mounted plungerarranged to successively I operate in the cup and cylinder,'said'plunger being of smallerdiameter'thanqthe cup and adapted toclosely fit the cylinder.

combination with an apertured hub, of a' closed lubricant cup having aportion fitted in the aperture and partially filling the V 1 same andforming with the walls of. the aperture a reservoir, a lubricantoutletfor the. cup communicating with the reservoir, means operating upon thestarting of the pulley to discharge a predetermined portion of oilfromthe cup to thereservoir'an'd a venting connection between the reservoirand cup. Y t 10.: In 'a lubricating device for pulleys, a closed cupattached to the hub of the pulley,

a hollow shaft extending through 'the'cup and forming a lubricantoutlet, an air outlet for the cup a plunger operating over said'shaftand'free of the walls of the cup,

a cylinder communicating withth'e hollow shaft and arranged to closelyfit the plunger, and a spring acting uponthe plunger tonorm'allycause.the same to close the air inlet, said plungerbbeing actuated bycentrifugal force in the starting of the: pulley to express apredetermined quantity of oil from the cylinder through the hollowshaft.

11. A lubricator for pulleys comprising a closed cup, a central tubeconnecting the I cup to a pulley,' acylinder open to the cup and tube,and a plunger of less diameter 10b 9. In a lubricating device forpulleys, the

than the cup and arranged to fit the cylin- In testimony whereof Weaflix our signader, said plunger being slidably mounted tures inpresence of two Witnesses. upon the tube and arranged to fit the cylin-LEROY A. BIGGAR. der and discharge a predetermined amount RUTHERFORD H.BIGGAR. 5 of oil to the pulley, said plunger being cen- Witnesses:

trifugally actuated at each starting of the JOSEPH P. MCCASKER, pulley.THOMAS J. CARSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

